I'm currently making an iOS 8 application ready for the app store upon iOS 8 release, I don't obviously I cannot show much code as I'm keeping the project very quiet but I am creating a view controller with a scroll view and many objects throughout to create a profile for the user, however I'm trying to add a button to all the user to add projects to their profile and the button won't get added to the scroll view... Is there an unwritten rule with UIButtons and UIScrollViews?
Heres the code I'm using to create the button
UIButton *addProject = [[UIButton alloc] initWithFrame:CGRectMake(210, 285, 100, 18)];
[addProject setTitle:#"Show View" forState:UIControlStateNormal];
[addProject addTarget:self action:#selector(addProjectPressed:) forControlEvents:UIControlEventTouchUpInside];
[_scrollView addSubview:addProject];
Is there something I need to do differently to add it to the scroll view?
EDIT 1: _scrollView.contentSize = CGSizeMake(self.view.frame.size.width, 699);
EDIT 2: Also, the scroll view is created in the storyboard and has a frame of 0, 64, 320, 455 but the content size as above has a larger height
Try with this;
UIButton *addProject = [UIButton buttonWithType: UIButtonTypeRoundedRect];
addProject.frame = CGRectMake(210, 285, 100, 18);
[addProject setTitle:#"Show View" forState:UIControlStateNormal];
[addProject addTarget:self action:#selector(addProjectPressed:) forControlEvents:UIControlEventTouchUpInside];
[_scrollView addSubview:addProject];
Try to add this line;
addProject.backgroundColor = [UIColor redColor];
It's some time happens that it may not appear due to same background color.
UIButton *addProject = [UIButton buttonWithType: UIButtonTypeRoundedRect];
addProject.frame = CGRectMake(210, 285, 100, 18);
[addProject setTitle:#"Show View" forState:UIControlStateNormal];
[addProject addTarget:self action:#selector(addProjectPressed:) forControlEvents:UIControlEventTouchUpInside];
[_scrollView addSubview:addProject];
_scrollView.backgroundColor = [UIColor clearColor];
Related
Hope all of you will be fine. Guys i have a situation, I have a uiview and uibutton as under:
UIView* containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 200, self.view.frame.size.width, 70)];
containerView.backgroundColor = [UIColor whiteColor];
[self.view addSubview:containerView];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.backgroundColor = [UIColor redColor];
[button addTarget:self action:#selector(SettingPressed:) forControlEvents:UIControlEventTouchUpInside];
UIImage *image = [UIImage imageNamed:#"settings_button.png"];
[button setImage:image forState:UIControlStateHighlighted & UIControlStateNormal & UIControlStateSelected];
button.frame = CGRectMake(0,0, 40, 40);
button.center = containerView.center;
[containerView addSubview:button];
The problem is uibutton appear far from uiview instead of in the middle of uiview. What i am mistaking, please guide me.
Thanks.
First, when you change a view's center property the frame property will be changed automatically so you only should set the button center:
button.center = CGPointMake(containerView.frame.size.width / 2,
containerView.frame.size.height / 2);
Now, whenever you change the center property you need to manually tell the view to redraw itself using setNeedsDisplay :
[button setNeedsDisplay]
and lastly, the difference between frame and bounds that frame defines the position and size relative to the parent view while bounds describes the drawing area inside (or outside) the frame.
I have a UIBarButtonItem that I want hugging the very left of the screen. I've tried putting a fixed barbutton with width=0 before the button and other configurations but there's always several pixels between the button and x=0.
I've also tried changing the imageInset of the UIButton
UIButton *moreButton = [UIButton buttonWithType:UIButtonTypeCustom];
moreButton.frame = CGRectMake(0, 0, 60, 35);
[moreButton setImage:[UIImage imageNamed:#"Morebutton"] forState:UIControlStateNormal];
moreButton.imageEdgeInsets = UIEdgeInsetsMake(0, -8, 0, 8);
[moreButton addTarget:self action:#selector(pressedMoreButton:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *moreBar = [[[UIBarButtonItem alloc] initWithCustomView:moreButton] autorelease];
But tapping near the edge of the screen doesn't trigger the selector (probably because only the image is moved but not the button itself) and increasing the size of the button doesn't affect the gap between the button and the left side.
Thanks
try to put your button to the container view and change position of button on the view.
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setBackgroundImage:buttonImage forState:UIControlStateNormal];
button.contentMode = UIViewContentModeScaleAspectFit;
button.frame= CGRectMake(-4.0, 0.0, 30, 30);
[button addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
UIView *v=[[[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, cellTextSize.width+10, buttonImage.size.height)] autorelease];
v.backgroundColor = [UIColor clearColor];
[v addSubview:button];
return [[[UIBarButtonItem alloc] initWithCustomView:v] autorelease];
I want to set image as a background on my button. So i create an image:
then I want to implement it as stretchable:
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(20, 20, 200, 400)];
[button setTitle:#"Test Button" forState:UIControlStateNormal];
UIImage *buttonImage = [_model.background resizableImageWithCapInsets:UIEdgeInsetsMake(6, 8, 6, 7)]; //this is screen 1
//UIImage *buttonImage = _model.background; //this is screen 2
[button addTarget:self action:#selector(buttonPressed:) forControlEvents: UIControlEventTouchUpInside];
[button setBackgroundImage:buttonImage forState:UIControlStateNormal];
[self addSubview:button];
I want to background stretch like in screen 2 but corners will sharp like screen 1. _model.background is UIImage contains original button background from the top of this post.
Am I using it right? I follow the documentation so UIEdgeInsetsMake(top,left,bottom,right) should be unstreachable corners, right?
According to the docs, the part inside the insets (the part not locked via cap settings) is tiled. So you should have a small 1 pixel region to tile. E.g. make the insets be UIEdgeIndetsMake(20,8,19,7)
This produces:
honestly, this is not the best picture for this effect but, please, try this line:
[button setBackgroundImage:[[UIImage imageNamed:#"image.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(20.f, 62.f, 20.f, 62.f)] forState:UIControlStateNormal];
I have created a springboard like panel containing buttons as follows:
-(void)configurePanel{
self.criteriaPanel.scrollEnabled=YES;
self.criteriaPanel=[[UIScrollView alloc] initWithFrame:CGRectMake(
0.0f,
0.0f,
[UIScreen mainScreen].bounds.size.width,
(BUTTON_HEIGHT+(3*BUTTON_Y_OFFSET))
)];
UIView *scrollViewContent=[[UIView alloc]init];
NSArray *criteriaTypeButtonTitles=[NSArray arrayWithObjects:
#"Option1",
#"Option2",
#"Option3",
#"Option4",
#"Option5",
#"Option6",
nil
];
for (int i=0; i<[criteriaTypeButtonTitles count]; i++) {
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.tag=i;
button.frame = CGRectMake(
(((BUTTON_X_OFFSET*i)+(BUTTON_WIDTH*i))+BUTTON_X_OFFSET)
, BUTTON_Y_OFFSET
, BUTTON_WIDTH
, BUTTON_HEIGHT
);
[button setTitle:[criteriaTypeButtonTitles objectAtIndex:i] forState:UIControlStateNormal];
[button setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
button.titleLabel.font=[UIFont systemFontOfSize:13.0f];
[button setBackgroundColor:[UIColor grayColor]];
[button.layer setCornerRadius:10.0f];
[button.layer setBorderWidth:1.0f];
[button addTarget:self action:#selector(sortByButtonTap:) forControlEvents:UIControlEventTouchDown];
[scrollViewContent addSubview:button];
}
//based upon # of buttons
self.criteriaPanel.contentSize=CGSizeMake(
(([criteriaTypeButtonTitles count]*BUTTON_WIDTH)+([criteriaTypeButtonTitles count]*BUTTON_X_OFFSET)),
(BUTTON_HEIGHT+(2*BUTTON_Y_OFFSET)));
[self.criteriaPanel addSubview:scrollViewContent];
[self.view addSubview:self.criteriaPanel];
}
The panel displays correctly and scrolls, but the tap events (sortByButtonTap:) for the buttons are never called. I suspect this is related to the buttons being contained in a view which is contained in the scrollview. After reading a number of other questions and the docs I still can't figure out what the solution should be.
EDIT:
I experimented w/ adding the buttons to the UIScrollView (self.criteriaPanel) directly and the button taps call sortByButtonTap: so it is something to do w/ the buttons being in the scrollViewContent.
You might need to set userInteractionEnabled on the containing view scrollViewContent for the button to receive touch events:
[scrollViewContent setUserInteractionEnabled:YES];
What if you try:
[button setExclusiveTouch:YES];
Buttons tend to work abnormally when they are inside a view that also handles touch events.
Follow this code for your query,
Add UIButton in Scrollview
scrollview.pagingEnabled = YES;
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake();
[button setTitle:#"X" forState:UIControlStateNormal];
[button setTitleColor:[UIColor clearColor] forState:UIControlStateNormal];
[button addTarget:self action:#selector(btnCloseClicked:withEvent:) forControlEvents:UIControlEventTouchUpInside];
[button addTarget:self action:#selector(btnCloseDraged:withEvent:) forControlEvents:UIControlEventTouchDragInside];
[button addTarget:self action:#selector(btnCloseDragedEnd:withEvent:) forControlEvents:UIControlEventTouchDragExit];
[scrollview addSubview:button];
scrollview.userInteractionEnabled = YES;
you can put this three methods of button manually.
Let me know if you still have query.
instead of:
[button addTarget:self
action:#selector(sortByButtonTap:)
forControlEvents:UIControlEventTouchDown];
try:
[button addTarget:self
action:#selector(sortByButtonTap:)
forControlEvents:UIControlEventTouchUpInside];
I think your problem is just that you set the wrong UIControlEvent to the UIButton. Change from UIControlEventTouchDown to UIControlEventTouchUpInside. If you connect a UIButton inside the Interface Builder it will always set it to this UIControlEvent:
Another reason:
Otherwise your UIScrollView controls the interactions because it needs to know if you want to scroll it. If you place UIButtons inside your UIScrollView they will be accessible but always with a little delay. This is why you should maybe change the settings for the UIScrollView:
You can disable delays content touches and UIButtons will be accessible immediately
When I make a custom UIButton with a background in interface builder, it gives me this default functionality of when i touch up inside, it sort of blacks out the image.
If I create the UIButton programmatically, like this:
buttonPic = [[UIButton alloc] initWithFrame:CGRectMake(5, 5, 100, 63)];
[[buttonPic imageView] setContentMode:UIViewContentModeScaleToFill];
[buttonPic setImage:[video pic] forState:UIControlStateNormal];
it doesn't behave like the one I created in IB at all. Nothing changes when I touch up inside.
Is there a settings in UIButton that I am missing?
Thanks
This is how to create a UIButton programatically.
//Specify the type of the button first. No need to use alloc-init for UIButton like other view objects.
UIButton *myBtn = [UIButton buttonWithType:UIButtonTypeCustom];
// Give UIButtonTypeRoundedRect to get default Interface builder style button.
myBtn.frame = CGRectMake(0, 0, 100, 40);
[self.view addSubview:myBtn];
// Since the button type is custom, give an image to make it visible.
[myBtn setBackgroundImage:[UIImage imageNamed:#"image.png"] forState:normal];
[myBtn addTarget:self action:#selector(myAction:) forControlEvents:UIControlEventTouchUpInside];
// These are some optional methods you may want to use.
myBtn.titleLabel.font = [UIFont fontWithName:#"Arial" size:15];
[myBtn setTitle:#"my button" forState:UIControlStateNormal];
[myBtn setTitleColor:[UIColor blackColor] forState:normal];
[myBtn setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];
I think you must enable one of this two options:
buttonPic.showsTouchWhenHighlighted = YES;
buttonPic.reversesTitleShadowWhenHighlighted = YES;